Accupro A-6120167R Micro Drill Bit 1.67 Mm Solid Carbide

Product Description

The ACCUPRO A-6120167R is a solid carbide micro drill bit designed for precise small-diameter drilling in demanding machining applications. At 1.67 mm (0.0657 inches) in diameter, it features a 120-degree point angle and a spiral flute geometry that promotes efficient chip evacuation in tight bore conditions. The bright, uncoated carbide construction delivers hardness and thermal resistance without added coating thickness, making it well suited for applications where dimensional accuracy at the cutting edge matters. With an overall length of 38 mm and a 2 mm straight-cylindrical shank, this bit is built for use in CNC machining centers, drill presses, and precision manual spindles.

This micro drill bit is intended for machinists, tool-and-die technicians, and precision fabricators working in electronics, medical device, aerospace component, or general metalworking environments. The miniature series designation indicates it is optimized for small-hole work where standard jobber-length bits are too large or too flexible to hold tolerance. Right-hand cut orientation suits standard spindle rotation. The 7.20 mm flute length provides adequate chip clearance for typical shallow-hole applications at this diameter.

Key Features

• 1.67 mm diameter with 0.0657-inch decimal equivalent for cross-reference in inch-based drawings
• 120-degree standard point angle for clean entry in metals and engineered plastics
• Solid carbide construction provides rigidity and wear resistance at small diameters
• Bright, uncoated finish maintains full cutting-edge geometry without coating buildup
• Spiral flute with regular helix promotes chip flow from the cut zone
• 2 mm straight-cylindrical shank seats securely in standard collets and drill chucks

Compatibility

Designed for use in CNC machining centers, high-speed drill presses, and precision spindles that accept a 2 mm straight-cylindrical shank. Suitable for drilling metals, plastics, and composite materials requiring small-diameter through or blind holes.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with small-diameter carbide tooling. Secure the shank fully in a collet or drill chuck rated for the spindle speed required at this diameter before operation. Carbide is brittle at small diameters — avoid side loads, interrupted cuts without proper feed reduction, or re-chucking with debris in the collet bore. Inspect the cutting edges under magnification before each use; micro drill bits at this size are sensitive to chipping that may not be visible to the naked eye.